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. WlTN/ms 78 I 1 v z E 7 -51 f a I By H. M. GREEN.

. PUMPING APPARATUS.

A PE AUON FILED JULY 20. 91s. RENEWED APR. 11, I922. I

1,437,9 Patented Dec. 5,1922.

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A TTORNEY 2 w m y 2 4 1 T. n M N 5 m m G T 6 n m T d S 1 m 2 a. 2 I a 7P. R m i 7 7 D I v E 3 8v & w 1 U E A Y! I '4 Pi I I I V d 4- V N 1, 2i:2 r E A R E R W on M V G P 1 A P, N HE iii 1!...Eil M i 1 U *3 Z I I: 1A l 1 4? v v i 2 i P n v APPLICATION FILED JULY 20 1918 .x mw STAT-ESPATENT'O'EFICIEK pump ng action by the joint operation of eflicient andeconomical in its operation:

Patented Dec. 5, 1922.

my u. GREEN, or LOS ANGELES, m

. I romrme srratas'rus Application filed my 20,1916, Serial no. 245,945.mnewea April 17, 1922. Serial No. 558,981.

To all whom it may concern:

Be it known that I, HENRY citizen of the United States, residing at LosAngeles, in the county of Los Angeles, State of California, haveinvented certain new and useful Improvements in Pumpfinlg Apparatus, ofwhich the following is a and exact specification.

Thepresent invention relates to apparatus for use in pumping wells, suchas oil wells and the like, and one ofthe objects in view is to deviseanimproved pumping construction in which means is provided forutilizinga fluid ressure flow in cooperation with mechanica pumpingmeans for producing. a continuous and more effective said fluid pressureand 'mechanic al means.

Another object of the invention is to provide an apparatus ofthechar'acter descrlbed in-which provision is made for .utilizin saidfluid pressureflow for'exerti-nga w el 'cle'aning action around theoutside of. the

pumping structure at the bottom of the well. A further object .is toprovide an improved pumping apparatus wherebyachop -p1ng action may "be.efi'ected around the'base of the apparatus for-loosening up the mateirial at'thegbottom of the well so that said material maybe freedand-removed by the.

pumping. action andsaid apparatus allowed to settle further within thewell.

, It is'a' lso sought to devise a simple'and compact arrangement andconstruction for the purpose stated, andwh-ich will be both With thesegeneral objects in view, as well as'minorobjects which will appear inthe course of the following specification, the invention will now'bedescribeduin de- "tail with reference vto the accompanying drawingsillustrating one form of construction which has been devised forembodying the proposed improvements, after which the novelfeaturesthe'rein will be set forth I and defined in. the appendedclaims.

M. Games, a

w 1 arod" of larg 2,3 and ,4 are vertical sectionali of the pump tubing.structure;

Figures 5 and 6 are-transverse sections taken on the lines 5-5 and 6-6,respective;

ly, of Figure 2;

.spectively, of the enlarged working p'ortion Figure 7' is 'asimilartransverse section- Figure' 11 -is an invertedplan view of the foot'-piece member of said tubing structure.

Referring to the said drawings in detail,

these show '(see Figure; '1) a. well casing 12 adapted tobe positionedin the well bore 13 and extending in practice more'or'les's nearl f to.thebottom ofthezwelh Through.

9. pac in collar 14 at the top of said casing extends t e upper end of'atubing structure comprising' the inner and outer tubing 16 and 18,respectively, the lattercarrying a.

packing casting 20 providedv with an inlet pipe22 adapted to be"connected wi thany'-.

suitable "source of fluidfpressure suppl .(not shown for apurpose-hereinafter exp ained.

A plunger rod 24 is operated within the tubing 16 by any suitablemechanical means (not" shown),: said rod extending out through a packingcasting 26 at the upper endof said. tubing, whichis also provided withan outlet pipe 28 for-the' discharge of the material pumped through saidtubing 16.

' The tom1 portion ofthe well. Ports36 (see Figures 2 -and 5) providecommunicationing 32and 34. The rod 24extends through 'and'below thecoupling30 and is connected through an interna bearing coupling. 40joining sections. of the-tubingBQ-and provided with ports 42 (Figure 6)to permit passage of the fluid pastsaid coupling 40.

The lower' end portion of the rod 38 is formed with. recesses -44;adapted to be delower ends of'the tubing 16 and 18; are connected bymeans 'of 'asuitable con-,-

' pling 30 to the upper ends of the inn'er and,

1 outer enlarged tubing :32 and-34, respectively, adapted to be let downinto the botr diameter operating i tachably: engaged by a plurality ofspring clutch fingers 46 (see Figures 3 and- 7) provided on the head 48'of a plunger tube 50,

the lower end of which is fitted with an internal collar 52 supporting aballxinlet valve 54. The rod 38 is adapted to be disconnected from theplunger tube by the raising of said rod so as to engage thefingers 46with the tapered lower end portion 54 of the bearing coupling 40,thereby spreading said fingers out of the recesses 44 I and releasingthe rod 38.

The plunger tube'50 operates through a packing structure comprising asectional packing cylinder 56 (see Figure 3), the sec-' tions of which.are connected by a coupling 58, said sections-inclosin'g packlng 60which is automatically compressed in opposite direct-ions by means of acoil spring 62 and 'tial to the well bore followers 64. The uppersection of the cylinder56 is threaded into. the lower end of the innertubing 32, while the "lower section of said cylinder hasthreaded'thereinto an inner tubing section 32 of smaller diameter thanthe tubing 32. The lower end of this section 32 is threaded into the topof a casting 66 (see Figures 4 and 9) which provides a valve chamber68having a plurality of ball inlet valves -70 controlling the inlet ports72. The upper end of the casting 66 is also secured by a coupling 74 tothe lower end of the outer tubing 34, and passages-76 are provided,leading from the valve chamber 68 to the annular space between "saidouter tubing 34 and the tubing section '32. These passages 76 extendthrough vertical rib formations 78 so that jet outlet ports 80 may beprovided, coin- -municating-with the passages 76 and leading out indirections approximately tangen- (see Figures 1, 4 and 8). The upper endof the plunger tube is provided with outlet openings 82, and the lowerend of the tubing 32 is provided with ports 84 adjacent the top of thepacking cylinder 56 and below the lowermost working position-of theoutlet openings 82 of the plunger tube. The valve' chamber 68communicates with theplunger tube 50 by way of a passage 86 around whichis formed a ledge 88 adapted to support said plunger tube whendisconnected fromthe rod 38 for any reason, as in the knocking down orassembling of the apparatus.

To. the bottom of the cast-ing 66'is secured a cylindrical section 90'rovided with the side inlet openings 92, an to the lower end of thissection 90 is attached a foot piece 94 of skeleton form having'itsbottom face provided with a plurality of radial wedge-shaped elements 96(see Figure 11) for engagement with the bottom of the Well.

In the operation of the apparatus, the plunger 5051s reciprocated by anysuitable mechanical means applied to the rod 24,

and a fluid under powerful pressure is admitted through the pipe 22 intothe 'outer chamber which is formed between the inner and outer tubing 16and 18 as well as be? tween the inner and outer-tubing 32 ;and'34.

.With the tubing structurca'rrange'd as, de-

scribed, the fluid pressure is obviousl confined by theouter tubin andthe said fluid restricted to t e path indicated by the arrows; inFigures 2 to 4;. a part of said flow being admitted through the 84. intothe inner or pumping-chamber occupied by the plunger, while theremainder of the flow proceeds down to the passages 76, the outlet endsof which are constricted in order to force some of the fluid out injets'through the ports 80, the rest of the fluid passing through thevalve chamber ports and up into the plunger tube. By, this means a"fluid pressure flow' is produced which cooperates with themechanical'ace .tion of the plunger in effecting a more eflicient andcontinuous pum'pingoperati'on 1n, the inner chamber;- and at the sametime this fluid flow is so confined asnot to waste the fluid or itspressure in flooding the oil sands (as would result from throwing thepressure upon the walls of the well), andby being so confined the.action'of the fluid pressure is rendered that much more direct,

economical and effective. flow, on leaving the outer tering through theports Again, the fluid chamber'and on}: 84 into the inner or pumpingchamber (which is of smaller,

cross-sectional area is accelerated in ve locity and the force of itsmovement within said inner chamber thereby increased. In the workingstrokes of the plunger the openings 82 donnotrdescend to the level ofthe inlet ports 84, and consequently the fluid pressure flow enteringthrough said ports is at all times behind that'issuing'from the plunger.and drives this on in front of it. The combined flow which thus resultsand istdelivered from the pipe 28 at the top of the well comprises thefluid admitted under pressure through the pipe 22 and mingled with theliquid, such as oil, which islifted. up by the plunger, together-withsuch sand and other material as is mixed therewith.

The fluid jets which are forcedout through the ports 80 exert a washingaction around these polnts near the bottom of the well so as to loosenthe sand and other solid material'in thisvicin'ityybut such liquid as isthus used for washing purposes is at once sucked back into the pumpingapparatus, with the'oil and sand,

with anyof the fluid which has'entered "the 'valve chamber directly fromthe passages 76.rTh'e-'proper sizes of passages 76 and ports SO-and 84will be maintained for obtainin'gthe mostefl'ective results as regardsthe action-of the fluid'pressure flow; The described packing structureserves to seal the inner or pumping chamber while at the same timepreserving the packing itself free v through theopen- Kings 92, and onpassing theyvalves 70 mixes i from any contact with the sands. It willbe understood also that by manipulating the apparatus so as to raise andlower the footpiece 94, and also slightly turning the same, a choppingaction may be exerted upon the bottom-of the well through the medium ofthe wedge-shaped ribs 96, whereby the sands I and other material formingthe bottom of the well may be loosened and broken up 'and the pumptubing thus allowed to settle further on down into such material,-thismaterial being finally pulverized and sucked into the apparatus with theliquid'fiow.

Having described the invention, what I claim as new and desire to secureby Letters Patent is:

1. A well pumping apparatus comprising a pumping cylinder, mechanicalpumping means operating within said cylinder, means for conducting aconfined flow of fluid under pressure and admitting the same to saidcylinder near its lower end for cooperating with said pumping means ineffecting a pumping action upward through said cylinder, and meansassociatedwith said fluid pressure means for producing an outward andapproximately congential jet flow at v the bottom of said apparatus forwashing the bottom of the well.

2. A well pumping apparatus comprising a tubing structure forming aninner chamher and an outer chamber both extending substantially entirelyfrom the top to the bottom of the well, said outer chamber having valvedinlet ports at its lower end and also a series of outlet ports abovesaid-inlet ports permitting a continuous restricted outflow from saidouter chamber, mechanical c said packing, sai

pumping means operating within said inner chamber,- said chambers beingprovided with communicating ports near the bottom of the well, and meansfor admittin fluid under pressure at the top of 'sai outer chamber,whereby a fluid pressure may be exerted in cooperation with saidmechanical pumping means for effecting a pumping action upward throughsaid inner chamber and also producing a jet flow out through said outletports for washing the bottom of the well.

3. A well pumping apparatus comprising a tubing structure forming aninner chamber and an outer chamber both extending substantially entirelyfrom the top to the bottom of the well, said inner chamber beingprovided withpacking near its lower end anda valved dplunger operatingthruogh chambers being provided with communicating ports above saidpacking and said outlet chamber being also provided with valved inletports at its lower end and with a series of approximately tangentiallyarranged outlet ports adjacent said inlet ports for permitting acontinuous restricted outflow from said outer chamber, and meansfor-admitting fluid under pressure at the top of said outer chamberwhereby a fluid pressure may be exerted in cooperation with said plungerfor effecting a pumping action upward through said inner chamber andalso producing a jet flow out through said outlet ports for washing thebottom of the well.

In witness whereof I hereto aflix my signature.

HENRY M. GREEN.

